EUVD-2026-48237
GHSA-995f-8qgf-h52p
Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Network-reachable Remote Development channel with missing authentication (PR:N) and no user interaction; injection into the remote backend crosses a trust boundary (S:C) with full impact.
Primary rating from Vendor (jetbrains).
CVSS VectorVendor: jetbrains
Lifecycle Timeline
3DescriptionCVE.org
In JetBrains IntelliJ IDEA before 2026.2 unauthorized input injection was possible in a Remote Development session
AnalysisAI
Authentication bypass via unauthorized input injection in JetBrains IntelliJ IDEA before 2026.2 allows remote attackers to inject unauthorized input into an active Remote Development session, undermining the trust boundary between client and backend host. Because the flaw stems from missing authentication (CWE-306) on a Remote Development channel and carries a maximal CVSS 10.0 with scope change, a successful attacker can influence code, files, or execution on the remote workspace. There is no public exploit identified at time of analysis, but the ceiling severity warrants prompt patching.
Technical ContextAI
IntelliJ IDEA's Remote Development feature splits the IDE into a thin local client and a headless backend running on a remote host, communicating over a network channel to edit and execute code on the remote machine. The vulnerability is classified as CWE-306 (Missing Authentication for Critical Function), meaning a security-critical operation on the Remote Development pathway did not properly verify the identity of the party supplying input. This lets 'unauthorized input injection' reach a session that should only accept input from the authenticated developer, and the vendor's own tag of 'Authentication Bypass' aligns with this root-cause class. No CPE strings were supplied in the intelligence, so exact affected component enumeration relies on the vendor's version statement ('before 2026.2').
RemediationAI
Vendor-released patch: 2026.2 - upgrade JetBrains IntelliJ IDEA to 2026.2 or later, which remediates the missing-authentication flaw in Remote Development; consult the JetBrains security advisory at https://www.jetbrains.com/privacy-security/issues-fixed/ for build-specific guidance. Until the upgrade is applied, reduce exposure by disabling Remote Development where it is not required, and restrict network reachability of Remote Development backend hosts so their listening ports are accessible only over trusted networks or a VPN rather than the open internet; the trade-off is that legitimate remote developers must connect through the restricted path, which may interrupt existing remote workflows. Avoid exposing IDE backend endpoints directly to untrusted networks, and monitor Remote Development sessions for unexpected connections as a detection compensating control.
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Same technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today